By "drag", I mean it feels like it stops for a very small fraction of a second. When I took it to my quilt shop for service, afterward I tried to show one of their teachers what I meant. She said that it is running fine. I am using a super slider and it doesn't look like the needle is catching. I bought a free motion foot that was for the viking. When I've used my old Brother machine, it doesn't do this. But that machine is a much lower quality machine.
I just tried lowering the presser foot pressure. It feels about the same. The stitching is smooth, but if you watch my hands, it looks as if they are vibrating. Wondering if it is just the quality of the machine? Maybe I'm being too picky?